/* roulang page: index */
:root{
  --bg-1:#0A0812;
  --bg-2:#16102A;
  --purple:#9B5CF6;
  --purple-soft:rgba(155,92,246,.18);
  --cyan:#2FE0C8;
  --amber:#F4A93C;
  --text:#EDE9FE;
  --text-dim:#A79FC0;
  --card:#1B1430;
  --line:#3A3050;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 0 0 1px rgba(155,92,246,.18), 0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(155,92,246,.38), 0 0 20px rgba(155,92,246,.45), 0 12px 32px rgba(0,0,0,.45);
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.75;
  color:var(--text);
  background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-2) 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 12% 4%, rgba(155,92,246,.12), transparent 65%),
    radial-gradient(560px 380px at 88% 22%, rgba(47,224,200,.09), transparent 68%),
    radial-gradient(700px 460px at 50% 96%, rgba(155,92,246,.10), transparent 70%);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:800;margin:0;line-height:1.3;letter-spacing:.2px;}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:900;}
h2{font-size:clamp(23px,2.9vw,32px);}
h3{font-size:20px;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:84px 0;position:relative;z-index:1;}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:1px;
  background:linear-gradient(90deg,var(--purple),var(--cyan));
}
.section-title{margin-bottom:12px;}
.section-sub{color:var(--text-dim);font-size:15px;margin:0;}
.divider-neon{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,transparent,rgba(155,92,246,.55),rgba(47,224,200,.5),transparent);
}
/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(13,9,24,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height .25s ease,background .25s ease,border-color .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--purple),var(--cyan),transparent);
  opacity:.8;
}
.header-inner{
  height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  transition:height .25s ease;
}
.site-header.scrolled{background:rgba(10,8,18,.97);}
.site-header.scrolled .header-inner{height:62px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:34px;height:34px;flex:0 0 34px;}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text b{font-family:var(--font-title);font-size:16px;font-weight:800;letter-spacing:.4px;}
.logo-text span{font-family:var(--font-mono);font-size:10px;color:var(--text-dim);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:10px 14px;font-size:14px;color:var(--text-dim);
  border-radius:8px;transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(155,92,246,.10);}
.nav-link.active{color:var(--cyan);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--cyan);
  box-shadow:0 0 14px rgba(47,224,200,.5);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 18px;border-radius:var(--radius-btn);
  background:var(--purple);color:#fff;font-size:14px;font-weight:600;
  border:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;
}
.nav-cta:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(47,224,200,.5);transform:translateY(-1px);}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(10,8,18,.98);
  display:flex;flex-direction:column;padding:24px;
  transform:translateX(100%);opacity:0;visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
}
.drawer.open{transform:translateX(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:transparent;cursor:pointer;font-size:20px;color:var(--text-dim);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  height:52px;display:flex;align-items:center;padding:0 16px;border-radius:10px;
  color:var(--text-dim);font-size:16px;border:1px solid transparent;
  opacity:0;transform:translateY(10px);
  transition:opacity .35s ease,transform .35s ease,background .2s ease,color .2s ease;
}
.drawer.open .drawer-link{opacity:1;transform:translateY(0);}
.drawer-link:nth-child(1){transition-delay:.04s;}
.drawer-link:nth-child(2){transition-delay:.08s;}
.drawer-link:nth-child(3){transition-delay:.12s;}
.drawer-link:nth-child(4){transition-delay:.16s;}
.drawer-link:nth-child(5){transition-delay:.2s;}
.drawer-link:hover,.drawer-link.active{background:rgba(155,92,246,.12);color:var(--cyan);}
.drawer-cta{margin-top:22px;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:box-shadow .2s ease,background .2s ease,border-color .2s ease,transform .2s ease,color .2s ease;
}
.btn-primary{background:var(--purple);color:#fff;}
.btn-primary:hover{box-shadow:0 0 22px rgba(155,92,246,.6);border-color:var(--cyan);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(155,92,246,.5);color:var(--text);}
.btn-ghost:hover{border-color:var(--cyan);box-shadow:0 0 16px rgba(47,224,200,.35);}
.btn-arrow{
  display:inline-flex;align-items:center;gap:6px;padding:0;background:none;border:0;
  color:var(--cyan);font-size:14px;font-weight:600;cursor:pointer;
}
.btn-arrow svg{transition:transform .2s ease;}
.btn-arrow:hover svg{transform:translateX(4px);}
.btn-block{width:100%;}
.btn:disabled{filter:saturate(.4);cursor:not-allowed;box-shadow:none;}
.btn.is-loading{pointer-events:none;color:transparent;position:relative;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;
}
/* ---------- Hero ---------- */
.hero{padding:150px 0 76px;position:relative;z-index:1;}
.hero-bg{
  position:absolute;inset:0;z-index:-1;overflow:hidden;
}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.30;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,8,18,.72) 0%,rgba(22,16,42,.92) 62%,var(--bg-2) 100%);
}
.hero-stack{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
  grid-template-rows:auto auto;
  gap:24px;
  align-items:stretch;
}
.hero-main{
  grid-row:1 / span 2;
  background:linear-gradient(160deg,rgba(27,20,48,.96),rgba(22,16,42,.9));
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:44px 40px;
  clip-path:polygon(16px 0,100% 0,100% 100%,0 100%,0 16px);
  position:relative;
  overflow:hidden;
}
.hero-main::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--purple),var(--cyan));
  opacity:.85;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:8px;border:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--cyan);
  background:rgba(47,224,200,.06);margin-bottom:20px;
}
.hero-title{margin-bottom:18px;}
.hero-title em{font-style:normal;color:var(--purple);}
.hero-desc{color:var(--text-dim);font-size:15px;max-width:56ch;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:30px;}
.hero-metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;padding-top:24px;border-top:1px solid var(--line);
}
.metric-item{min-width:0;}
.metric-num{font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--text);}
.metric-num i{font-style:normal;font-size:12px;color:var(--text-dim);margin-left:3px;}
.metric-label{font-size:12px;color:var(--text-dim);margin-top:4px;}
.hero-side{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:24px;display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .25s ease,box-shadow .25s ease;
  clip-path:polygon(12px 0,100% 0,100% 100%,0 100%,0 12px);
}
.hero-side:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.hero-side h3{font-size:16px;margin-bottom:8px;}
.hero-side p{font-size:13px;color:var(--text-dim);margin:0 0 16px;}
.hero-side .side-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--cyan);line-height:1;}
.hero-side .side-num.amber{color:var(--amber);}
.hero-side .side-foot{font-family:var(--font-mono);font-size:12px;color:var(--text-dim);margin-top:8px;}
.side-bar{height:6px;border-radius:4px;background:#241a3d;overflow:hidden;margin-top:14px;}
.side-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--purple),var(--cyan));}
/* ---------- 通用卡片 ---------- */
.card{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.card-cut{clip-path:polygon(12px 0,100% 0,100% 100%,0 100%,0 12px);}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
/* ---------- 指标看板 ---------- */
.stat-card{padding:24px;position:relative;overflow:hidden;}
.stat-card .stat-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;}
.stat-card h3{font-size:15px;font-weight:600;color:var(--text-dim);font-family:var(--font-body);}
.stat-value{font-family:var(--font-mono);font-size:32px;font-weight:700;margin:14px 0 6px;line-height:1;}
.stat-value small{font-size:13px;color:var(--text-dim);margin-left:4px;font-weight:500;}
.stat-trend{font-family:var(--font-mono);font-size:12px;color:var(--cyan);}
.stat-trend.down{color:var(--amber);}
.mini-bars{display:flex;align-items:flex-end;gap:4px;height:34px;margin-top:14px;}
.mini-bars i{flex:1;background:linear-gradient(180deg,var(--purple),rgba(155,92,246,.25));border-radius:2px;display:block;}
.mini-bars i.hi{background:linear-gradient(180deg,var(--cyan),rgba(47,224,200,.2));}
/* ---------- 服务矩阵 ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.service-card{padding:26px;display:flex;flex-direction:column;gap:12px;}
.services-grid .service-card:nth-child(2){margin-top:26px;}
.services-grid .service-card:nth-child(5){margin-top:26px;}
.service-icon{
  width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(155,92,246,.12);border:1px solid rgba(155,92,246,.3);
}
.service-icon svg{width:22px;height:22px;stroke:var(--cyan);fill:none;stroke-width:1.6;}
.service-card h3{font-size:18px;}
.service-card p{font-size:14px;color:var(--text-dim);margin:0;}
.service-card .btn-arrow{margin-top:auto;padding-top:6px;}
/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.cat-chip{
  display:flex;align-items:center;gap:12px;padding:14px;border-radius:12px;
  background:var(--card);box-shadow:0 0 0 1px rgba(155,92,246,.16);
  transition:box-shadow .2s ease,transform .2s ease;
}
.cat-chip:hover{transform:translateY(-2px);box-shadow:0 0 20px rgba(155,92,246,.42);}
.cat-thumb{
  width:40px;height:40px;flex:0 0 40px;border-radius:9px;overflow:hidden;
  background:#1B1430;display:flex;align-items:center;justify-content:center;
}
.cat-thumb img{width:100%;height:100%;object-fit:cover;}
.cat-chip b{font-size:14px;font-weight:600;display:block;}
.cat-chip span{font-size:12px;color:var(--text-dim);font-family:var(--font-mono);}
/* ---------- 对比 ---------- */
.compare-wrap{
  display:grid;grid-template-columns:1fr 1px 1fr;gap:0;
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
}
.compare-col{padding:30px 28px;}
.compare-col.before{background:rgba(58,48,80,.28);}
.compare-col.after{background:linear-gradient(160deg,rgba(155,92,246,.12),rgba(47,224,200,.06));}
.compare-col h3{font-size:16px;margin-bottom:20px;color:var(--text-dim);font-family:var(--font-body);font-weight:600;}
.compare-col.after h3{color:var(--cyan);}
.compare-row{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:13px 0;border-bottom:1px dashed rgba(58,48,80,.9);font-size:14px;
}
.compare-row:last-child{border-bottom:0;}
.compare-row .val{font-family:var(--font-mono);font-size:15px;font-weight:600;}
.compare-col.before .val{color:var(--text-dim);}
.compare-col.after .val{color:var(--text);}
.compare-col.after .val.diff{color:var(--amber);}
.compare-divider{background:linear-gradient(180deg,transparent,var(--purple),var(--cyan),transparent);box-shadow:0 0 14px rgba(155,92,246,.6);}
/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:10px 0;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;transform:translateX(-50%);
  background:linear-gradient(180deg,transparent,var(--purple),var(--cyan),transparent);
}
.tl-item{position:relative;width:50%;padding:0 42px 40px 0;}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 40px 42px;}
.tl-dot{
  position:absolute;right:-7px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--bg-2);border:2px solid var(--cyan);box-shadow:0 0 14px rgba(47,224,200,.7);
}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-7px;border-color:var(--purple);box-shadow:0 0 14px rgba(155,92,246,.7);}
.tl-date{font-family:var(--font-mono);font-size:12px;color:var(--cyan);margin-bottom:8px;}
.tl-card{padding:20px;}
.tl-card h3{font-size:17px;margin-bottom:8px;}
.tl-card p{font-size:13px;color:var(--text-dim);margin:0;}
/* ---------- 专题横幅 ---------- */
.topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.topic-card{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:0;overflow:hidden;
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.topic-card .thumb{aspect-ratio:5/2;height:100%;overflow:hidden;background:#1B1430;}
.topic-card .thumb img{width:100%;height:100%;object-fit:cover;}
.topic-body{padding:20px 22px;}
.topic-body h3{font-size:17px;margin-bottom:8px;}
.topic-body p{font-size:13px;color:var(--text-dim);margin:0 0 12px;}
.tag{
  display:inline-block;padding:3px 10px;border-radius:6px;font-size:12px;
  border:1px solid var(--line);color:var(--text-dim);font-family:var(--font-mono);
}
/* ---------- 资讯列表 ---------- */
.news-list{background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
.news-row{
  display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;
  padding:16px 22px;border-bottom:1px solid rgba(58,48,80,.6);
  transition:background .2s ease;position:relative;
}
.news-row:hover{background:var(--card);}
.news-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:transparent;transition:background .2s ease;
}
.news-row:hover::before{background:var(--cyan);}
.news-row img{width:120px;height:80px;object-fit:cover;border-radius:8px;background:#241a3d;}
.news-meta{font-family:var(--font-mono);font-size:12px;color:var(--text-dim);margin-bottom:6px;}
.news-row h3{font-size:16px;margin-bottom:6px;}
.news-row p{font-size:13px;color:var(--text-dim);margin:0;}
.news-foot{padding:18px 22px;text-align:right;}
/* ---------- 保障卡 ---------- */
.guard-card{padding:22px;display:flex;flex-direction:column;gap:12px;}
.guard-card svg{width:24px;height:24px;stroke:var(--purple);fill:none;stroke-width:1.6;}
.guard-card h3{font-size:16px;}
.guard-card p{font-size:13px;color:var(--text-dim);margin:0;}
/* ---------- 快速解答 ---------- */
.quick-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.quick-item{
  background:var(--card);border-radius:var(--radius-card);padding:22px 24px;
  border-left:2px solid var(--cyan);box-shadow:0 0 18px rgba(47,224,200,.16);
}
.quick-item .q-index{font-family:var(--font-mono);font-size:12px;color:var(--cyan);display:block;margin-bottom:8px;}
.quick-item h3{font-size:16px;margin-bottom:8px;}
.quick-item p{font-size:13px;color:var(--text-dim);margin:0;}
/* ---------- 用户反馈 ---------- */
.feedback-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.feedback-card{padding:26px;position:relative;}
.feedback-grid .feedback-card:nth-child(2){margin-top:30px;}
.feedback-card .quote{
  font-family:var(--font-title);font-size:44px;line-height:1;color:var(--purple);opacity:.5;
  display:block;margin-bottom:6px;
}
.feedback-card p{font-size:14px;color:var(--text-dim);}
.feedback-meta{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:12px;color:var(--text-dim);border-top:1px solid var(--line);padding-top:14px;margin-top:16px;}
/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);border-radius:12px;box-shadow:0 0 0 1px rgba(155,92,246,.16);
  border-left:2px solid transparent;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-left-color:var(--cyan);box-shadow:0 0 20px rgba(47,224,200,.3);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:15px;font-weight:600;font-family:var(--font-body);color:var(--text);
}
.faq-icon{
  flex:0 0 20px;width:20px;height:20px;position:relative;transition:transform .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--cyan);border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .2s ease;}
.faq-item.open .faq-icon{transform:rotate(90deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--text-dim);margin:0;}
/* ---------- 表单 ---------- */
.subscribe{
  max-width:560px;margin:0 auto;background:var(--card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:32px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;background:#120d22;
  border:1px solid var(--line);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:96px;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(47,224,200,.16);
}
.field.error input,.field.error select{border-color:var(--amber);}
.field .err{display:none;font-size:12px;color:var(--amber);margin-top:6px;}
.field.error .err{display:block;}
.form-success{
  display:none;margin-top:16px;padding:12px 14px;border-left:2px solid var(--cyan);
  background:rgba(47,224,200,.08);font-size:13px;color:var(--text);border-radius:0 10px 10px 0;
}
.form-success.show{display:block;}
/* ---------- 尾部 CTA ---------- */
.final-cta{
  position:relative;overflow:hidden;
  background:var(--card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:56px 40px;min-height:220px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.final-cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 260px at 22% 50%, rgba(155,92,246,.28), transparent 70%);
  pointer-events:none;
}
.final-cta h2{max-width:620px;margin-bottom:10px;}
.final-cta p{color:var(--text-dim);font-size:14px;margin:0;}
.final-cta .actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}
/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:20px;
  background:rgba(10,8,18,.9);padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13px;color:var(--text-dim);max-width:34ch;}
.footer-col h3{font-size:14px;font-family:var(--font-body);color:var(--text);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13px;color:var(--text-dim);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  border-top:1px solid rgba(58,48,80,.7);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--text-dim);font-family:var(--font-mono);
}
/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-stack{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);}
  .cat-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none;}
  .menu-toggle{display:flex;}
  .hero{padding-top:120px;}
  .hero-stack{grid-template-columns:1fr;grid-template-rows:auto;}
  .hero-main{grid-row:auto;}
  .services-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .services-grid .service-card:nth-child(2),
  .services-grid .service-card:nth-child(5){margin-top:0;}
  .grid-3,.grid-4,.feedback-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feedback-grid .feedback-card:nth-child(2){margin-top:0;}
  .topic-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .compare-wrap{grid-template-columns:1fr;}
  .compare-divider{height:1px;box-shadow:0 0 14px rgba(47,224,200,.6);}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .container{padding:0 18px;}
  .hero{padding:108px 0 56px;}
  .hero-main{padding:30px 22px;}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .services-grid,.grid-3,.grid-4,.grid-2,.feedback-grid,.quick-list,.cat-grid{grid-template-columns:1fr;}
  .timeline::before{left:8px;}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 30px 30px;}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:1px;right:auto;}
  .topic-card{grid-template-columns:1fr;}
  .topic-card .thumb{aspect-ratio:16/9;}
  .news-row{grid-template-columns:96px minmax(0,1fr);padding:14px 16px;}
  .news-row img{width:96px;height:66px;}
  .final-cta{padding:36px 24px;}
  .subscribe{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
}
@media (max-width:639px){
  h1{font-size:30px;}
  .hero-title{font-size:30px;}
  .compare-col{padding:22px 18px;}
  .metric-num{font-size:18px;}
  .stat-value{font-size:26px;}
}

/* roulang page: category1 */
:root{
 --bg-1:#0A0812;
 --bg-2:#16102A;
 --purple:#9B5CF6;
 --purple-soft:rgba(155,92,246,.18);
 --cyan:#2FE0C8;
 --amber:#F4A93C;
 --text:#EDE9FE;
 --text-dim:#A79FC0;
 --card:#1B1430;
 --line:#3A3050;
 --radius-card:14px;
 --radius-btn:10px;
 --shadow-card:0 0 0 1px rgba(155,92,246,.18), 0 12px 32px rgba(0,0,0,.45);
 --shadow-hover:0 0 0 1px rgba(155,92,246,.38), 0 0 20px rgba(155,92,246,.45), 0 12px 32px rgba(0,0,0,.45);
 --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
 --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
 --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font-body);
 font-size:15px;
 line-height:1.75;
 color:var(--text);
 background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-2) 100%);
 background-attachment:fixed;
 overflow-x:hidden;
 padding-top:70px;
}
body::before{
 content:"";
 position:fixed;
 inset:0;
 pointer-events:none;
 z-index:0;
 background:
 radial-gradient(680px 420px at 12% 4%, rgba(155,92,246,.12), transparent 65%),
 radial-gradient(560px 380px at 88% 22%, rgba(47,224,200,.09), transparent 68%),
 radial-gradient(700px 460px at 50% 96%, rgba(155,92,246,.10), transparent 70%);
}
body::after{
 content:"";
 position:fixed;
 inset:0;
 pointer-events:none;
 z-index:0;
 opacity:.035;
 background-image:linear-gradient(rgba(237,233,254,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(237,233,254,.6) 1px,transparent 1px);
 background-size:3px 3px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3{font-family:var(--font-title);font-weight:800;line-height:1.3;margin:0;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:84px 0;position:relative;z-index:1;}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
 color:var(--cyan);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--purple),var(--cyan));}
.section-title{font-size:30px;margin-bottom:12px;}
.section-title span{color:var(--cyan);}
.section-sub{color:var(--text-dim);font-size:15px;margin:0;}
.divider-neon{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(155,92,246,.55),rgba(47,224,200,.5),transparent);}
.mono{font-family:var(--font-mono);}

/* ---------- 导航 ---------- */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:80;
 background:rgba(13,9,24,.92);
 backdrop-filter:blur(8px);
 -webkit-backdrop-filter:blur(8px);
 transition:height .25s ease,background .25s ease;
}
.site-header::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
 background:linear-gradient(90deg,transparent,var(--purple),var(--cyan),transparent);
 opacity:.8;
}
.header-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px;transition:height .25s ease;}
.site-header.scrolled{background:rgba(10,8,18,.97);}
.site-header.scrolled .header-inner{height:62px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:34px;height:34px;flex:0 0 34px;}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text b{font-family:var(--font-title);font-size:16px;font-weight:800;letter-spacing:.4px;}
.logo-text span{font-family:var(--font-mono);font-size:10px;color:var(--text-dim);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{position:relative;padding:10px 14px;font-size:14px;color:var(--text-dim);border-radius:8px;transition:color .2s ease,background .2s ease;}
.nav-link:hover{color:var(--text);background:rgba(155,92,246,.10);}
.nav-link.active{color:var(--cyan);}
.nav-link.active::after{
 content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
 border-radius:2px;background:var(--cyan);box-shadow:0 0 14px rgba(47,224,200,.5);
}
.nav-cta{
 display:inline-flex;align-items:center;gap:6px;
 padding:10px 18px;border-radius:var(--radius-btn);
 background:var(--purple);color:#fff;font-size:14px;font-weight:600;
 border:1px solid transparent;white-space:nowrap;
 transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;
}
.nav-cta:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(47,224,200,.5);transform:translateY(-1px);}
.nav-cta:active{transform:translateY(0);}
.menu-toggle{
 display:none;width:44px;height:44px;align-items:center;justify-content:center;
 background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.drawer{
 position:fixed;inset:0;z-index:90;background:rgba(10,8,18,.98);
 display:flex;flex-direction:column;padding:24px;
 transform:translateX(100%);opacity:0;visibility:hidden;
 transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
}
.drawer.open{transform:translateX(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:transparent;cursor:pointer;font-size:20px;color:var(--text-dim);line-height:1;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
 height:52px;display:flex;align-items:center;padding:0 16px;border-radius:10px;
 color:var(--text-dim);font-size:16px;border:1px solid transparent;
 opacity:0;transform:translateY(10px);
 transition:opacity .35s ease,transform .35s ease,background .2s ease,color .2s ease;
}
.drawer.open .drawer-link{opacity:1;transform:translateY(0);}
.drawer-link:nth-child(1){transition-delay:.04s;}
.drawer-link:nth-child(2){transition-delay:.08s;}
.drawer-link:nth-child(3){transition-delay:.12s;}
.drawer-link:nth-child(4){transition-delay:.16s;}
.drawer-link:nth-child(5){transition-delay:.2s;}
.drawer-link:hover,.drawer-link.active{background:rgba(155,92,246,.12);color:var(--cyan);}
.drawer-cta{margin-top:22px;justify-content:center;}

/* ---------- 分类页头 ---------- */
.cate-head{
 position:relative;padding:56px 0 34px;overflow:hidden;
 border-bottom:1px solid transparent;
}
.cate-head::before{
 content:"";position:absolute;inset:0;pointer-events:none;
 background:
 radial-gradient(520px 300px at 18% 0%, rgba(155,92,246,.14), transparent 70%),
 radial-gradient(420px 260px at 82% 10%, rgba(47,224,200,.08), transparent 72%);
}
.cate-head::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
 background:linear-gradient(90deg,transparent,rgba(155,92,246,.7),rgba(47,224,200,.6),transparent);
 box-shadow:0 0 16px rgba(155,92,246,.4);
}
.cate-top{display:flex;align-items:flex-start;justify-content:space-between;gap:28px;flex-wrap:wrap;position:relative;z-index:1;}
.cate-title{font-size:40px;letter-spacing:.5px;margin-bottom:14px;}
.cate-title em{font-style:normal;color:var(--cyan);}
.cate-desc{color:var(--text-dim);max-width:660px;margin:0;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);font-family:var(--font-mono);}
.breadcrumb a{color:var(--text-dim);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb span.sep{color:var(--line);}
.breadcrumb .current{color:var(--cyan);}
.stat-strip{
 margin-top:28px;display:flex;flex-wrap:wrap;gap:14px 34px;
 padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
 background:rgba(27,20,48,.6);position:relative;z-index:1;
}
.stat-strip .stat{display:flex;align-items:baseline;gap:8px;font-size:13px;color:var(--text-dim);}
.stat-strip .stat b{font-family:var(--font-mono);font-size:17px;color:var(--text);font-weight:500;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;position:relative;z-index:1;}

/* ---------- 通用 chip / 标签 ---------- */
.chip{
 display:inline-flex;align-items:center;gap:6px;
 font-size:12px;line-height:1;padding:7px 12px;border-radius:8px;
 border:1px solid var(--line);background:transparent;color:var(--text-dim);
 cursor:pointer;white-space:nowrap;
 transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{color:var(--text);border-color:rgba(155,92,246,.6);}
.chip.active{background:var(--purple);border-color:var(--purple);color:#fff;box-shadow:0 0 16px rgba(155,92,246,.55);}
.tag{
 display:inline-flex;align-items:center;font-size:12px;line-height:1;padding:5px 9px;
 border-radius:6px;border:1px solid var(--line);color:var(--text-dim);font-family:var(--font-mono);
}
.tag--cyan{border-color:rgba(47,224,200,.45);color:var(--cyan);}
.tag--purple{border-color:rgba(155,92,246,.5);color:#C6A8FF;}
.tag--amber{border-color:rgba(244,169,60,.45);color:var(--amber);}

/* ---------- 筛选工具条 ---------- */
.filter-bar{
 position:sticky;top:70px;z-index:60;
 background:rgba(13,9,24,.94);backdrop-filter:blur(8px);
 border-top:1px solid rgba(58,48,80,.6);
 border-bottom:1px solid rgba(58,48,80,.6);
 padding:14px 0;
}
.filter-inner{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.filter-group{display:flex;align-items:center;gap:8px;min-width:0;}
.filter-label{font-size:12px;color:var(--text-dim);font-family:var(--font-mono);letter-spacing:.08em;white-space:nowrap;}
.chip-scroll{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none;}
.chip-scroll::-webkit-scrollbar{display:none;}
.filter-sort{margin-left:auto;display:flex;align-items:center;gap:8px;}
.filter-sort select{
 background:#120D22;border:1px solid var(--line);border-radius:8px;
 padding:8px 12px;font-size:13px;color:var(--text);cursor:pointer;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.filter-sort select:hover{border-color:rgba(155,92,246,.6);}
.filter-sort select:focus{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(47,224,200,.14);outline:none;}

/* ---------- 条目列表 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px;}
.entry{
 display:flex;gap:16px;padding:16px;
 background:var(--card);border-radius:var(--radius-card);
 box-shadow:var(--shadow-card);
 clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
 transition:box-shadow .25s ease,transform .25s ease;
}
.entry:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.entry-thumb{flex:0 0 160px;width:160px;height:100px;border-radius:10px;overflow:hidden;background:var(--card);position:relative;}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,8,18,0) 40%,rgba(10,8,18,.6));}
.entry-body{min-width:0;flex:1;}
.entry-title{font-family:var(--font-title);font-size:17px;font-weight:800;line-height:1.45;margin:0 0 8px;transition:color .2s ease;}
.entry:hover .entry-title{color:var(--cyan);}
.entry-sum{font-size:13px;color:var(--text-dim);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.entry-meta{display:flex;flex-wrap:wrap;gap:9px 14px;font-size:12px;color:var(--text-dim);font-family:var(--font-mono);}
.entry-meta .dot-live{color:var(--cyan);}
.list-foot{display:flex;justify-content:center;margin-top:34px;}

/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:44px;padding:0 22px;border-radius:var(--radius-btn);
 font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;
 transition:box-shadow .2s ease,border-color .2s ease,background .2s ease,transform .2s ease,color .2s ease;
}
.btn-solid{background:var(--purple);color:#EDE9FE;}
.btn-solid:hover{box-shadow:0 0 20px rgba(155,92,246,.55);transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--purple);color:var(--text);}
.btn-outline:hover{border-color:var(--cyan);box-shadow:0 0 16px rgba(47,224,200,.35);color:var(--cyan);}
.btn-arrow{background:transparent;padding:0;height:auto;color:var(--cyan);font-weight:500;}
.btn-arrow::after{content:"→";margin-left:4px;transition:transform .2s ease;display:inline-block;}
.btn-arrow:hover::after{transform:translateX(4px);}
.btn:disabled{opacity:.4;cursor:not-allowed;filter:saturate(.4);}
.btn-block{width:100%;}

/* ---------- 指标小卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:26px;}
.metric-card{
 padding:20px;background:var(--card);border-radius:var(--radius-card);
 box-shadow:var(--shadow-card);position:relative;overflow:hidden;
 clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
 transition:box-shadow .25s ease,transform .25s ease;
}
.metric-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.metric-label{font-size:13px;color:var(--text-dim);margin-bottom:10px;}
.metric-value{font-family:var(--font-mono);font-size:30px;font-weight:500;color:var(--text);line-height:1.1;}
.metric-value small{font-size:14px;color:var(--text-dim);margin-left:4px;}
.metric-bar{height:4px;border-radius:2px;background:rgba(58,48,80,.8);margin-top:14px;overflow:hidden;}
.metric-bar i{display:block;height:100%;border-radius:2px;background:linear-gradient(90deg,var(--purple),var(--cyan));}
.metric-note{margin-top:10px;font-size:12px;color:var(--text-dim);font-family:var(--font-mono);}
.metric-note .up{color:var(--cyan);}
.metric-note .peak{color:var(--amber);}

/* ---------- 精选条目 ---------- */
.pick-list{margin-top:24px;border-top:1px solid rgba(58,48,80,.7);}
.pick-item{
 display:flex;align-items:center;gap:18px;padding:16px 14px;
 border-bottom:1px solid rgba(58,48,80,.7);
 border-left:2px solid transparent;
 transition:background .2s ease,border-color .2s ease;
}
.pick-item:hover{background:var(--card);border-left-color:var(--cyan);}
.pick-index{font-family:var(--font-mono);font-size:13px;color:var(--text-dim);flex:0 0 32px;}
.pick-main{flex:1;min-width:0;}
.pick-title{font-size:15px;font-weight:600;margin:0 0 4px;}
.pick-item:hover .pick-title{color:var(--cyan);}
.pick-desc{font-size:13px;color:var(--text-dim);margin:0;}
.pick-meta{font-family:var(--font-mono);font-size:12px;color:var(--text-dim);white-space:nowrap;}

/* ---------- 相关分类胶囊 ---------- */
.cate-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px;}
.cate-pill{
 display:flex;align-items:center;gap:12px;padding:14px 16px;
 background:rgba(27,20,48,.8);border:1px solid var(--line);border-radius:12px;
 transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.cate-pill:hover{transform:translateY(-2px);border-color:rgba(155,92,246,.6);box-shadow:0 0 20px rgba(155,92,246,.35);}
.cate-pill svg{width:26px;height:26px;flex:0 0 26px;}
.cate-pill b{display:block;font-size:14px;font-weight:600;}
.cate-pill span{display:block;font-size:12px;color:var(--text-dim);}

/* ---------- FAQ ---------- */
.faq-list{margin-top:24px;}
.faq-item{
 border:1px solid var(--line);border-left:2px solid transparent;
 border-radius:12px;background:var(--card);margin-bottom:10px;overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-left-color:var(--cyan);box-shadow:0 0 0 1px rgba(47,224,200,.22),0 0 18px rgba(47,224,200,.18);}
.faq-q{
 width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:12px 16px;background:transparent;border:0;cursor:pointer;text-align:left;
 font-size:14px;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--cyan);}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 14px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--cyan);transition:transform .2s ease,opacity .2s ease;}
.faq-icon::before{left:0;top:6px;width:14px;height:2px;}
.faq-icon::after{left:6px;top:0;width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.open .faq-a{max-height:340px;}
.faq-a p{padding:0 16px 16px;font-size:14px;color:var(--text-dim);margin:0;}

/* ---------- 订阅 ---------- */
.sub-wrap{
 max-width:560px;margin:0 auto;padding:30px 26px;
 background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
 clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
}
.sub-form label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:8px;}
.sub-row{display:flex;gap:12px;}
.sub-row input{
 flex:1;height:44px;padding:0 14px;border-radius:var(--radius-btn);
 background:#120D22;border:1px solid var(--line);color:var(--text);
 transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-row input::placeholder{color:#6E678A;}
.sub-row input:hover{border-color:rgba(155,92,246,.55);}
.sub-row input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(47,224,200,.14);}
.sub-row input.error{border-color:var(--amber);box-shadow:0 0 0 4px rgba(244,169,60,.12);}
.form-msg{margin:14px 0 0;font-size:13px;color:var(--text-dim);padding-left:12px;border-left:2px solid transparent;}
.form-msg.ok{border-left-color:var(--cyan);color:var(--cyan);}
.form-msg.err{border-left-color:var(--amber);color:var(--amber);}
.sub-hint{margin-top:16px;font-size:12px;color:var(--text-dim);}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;z-index:1;margin-top:40px;padding:64px 0 28px;background:rgba(10,8,18,.72);}
.site-footer::before{
 content:"";position:absolute;top:0;left:0;right:0;height:1px;
 background:linear-gradient(90deg,transparent,rgba(155,92,246,.6),rgba(47,224,200,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;}
.footer-brand p{color:var(--text-dim);font-size:13px;margin:16px 0 0;max-width:280px;}
.footer-brand .logo{margin-bottom:4px;}
.footer-col h3{font-family:var(--font-body);font-size:13px;font-weight:600;color:var(--text);margin:0 0 14px;letter-spacing:.06em;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:13px;color:var(--text-dim);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
 display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
 margin-top:44px;padding-top:20px;font-size:12px;color:var(--text-dim);font-family:var(--font-mono);
 border-top:1px solid rgba(58,48,80,.7);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
 .nav-links,.header-inner > .nav-cta{display:none;}
 .menu-toggle{display:inline-flex;}
 .cate-title{font-size:34px;}
 .entry-grid{grid-template-columns:1fr;}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .cate-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .footer-grid{grid-template-columns:1fr 1fr;}
 .filter-bar{top:62px;}
}
@media (max-width:768px){
 .section{padding:60px 0;}
 .section-title{font-size:25px;}
 .cate-head{padding:36px 0 26px;}
 .cate-title{font-size:30px;}
 .filter-sort{margin-left:0;width:100%;}
 .filter-sort select{flex:1;}
 .entry{flex-direction:column;}
 .entry-thumb{flex:none;width:100%;height:170px;}
 .pick-item{flex-wrap:wrap;gap:8px 14px;}
 .pick-meta{width:100%;}
 .sub-row{flex-direction:column;}
 .sub-row .btn{width:100%;}
}
@media (max-width:640px){
 .container{padding:0 16px;}
 .stat-strip{gap:12px 20px;padding:14px 14px;}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
 .metric-value{font-size:24px;}
 .cate-grid{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .section{padding:48px 0;}
 .cate-title{font-size:28px;}
}